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Sat Jun 30, 2012, 06:26 PM

bananas (20,176 posts)

Fukushima reactor cooling system suspended: Kyodo

Last edited Sat Jun 30, 2012, 06:36 PM USA/ET - Edit history (1)

Source: MarketWatch

The cooling system for the spent fuel pool at the crippled Fukushima Daiichi power plant's No. 4 reactor automatically suspended operation Saturday, Tokyo Electric Power Co. said, Kyodo News reported Saturday.

The utility known as Tepco has been unable to activate a backup cooling system for the pool and is looking into the cause of the trouble, officials of the plant operator said later in the day, adding it is unlikely the temperature will rise rapidly.

<snip>

If Tepco continues to be unable to cool the pool, the temperature could reach 65 C, which is the upper limit designated in the safety regulations, on Tuesday morning. The cooling system at the No. 4 reactor was previously suspended on June 4.

Read more: http://www.marketwatch.com/story/fukushima-reactor-cooling-system-suspended-kyodo-2012-06-30

18 replies, 3246 views

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18 replies	Author	Time	Post
Fukushima reactor cooling system suspended: Kyodo (Original post)	bananas	Jun 2012	OP
Link's missing	XemaSab	Jun 2012	#1
Thanks - forgot it! It should work now.	bananas	Jun 2012	#2
.	XemaSab	Jun 2012	#3
Thanks for saying that. nt	bananas	Jul 2012	#16
ummmmm	waddirum	Jun 2012	#4
other key sentences	waddirum	Jun 2012	#5
Leakage of Radioactive Material-Laden Cooling Water	solarman350	Jul 2012	#12
What could have possibly happened to cause that cooling system to automatically shut down?. . .	Journeyman	Jun 2012	#6
Time to recycle the kid's club house in the back yard.	freshwest	Jun 2012	#7
Why not nuclear?	sulphurdunn	Jun 2012	#8
Amen nt	snappyturtle	Jun 2012	#9
I'll say it again.	They_Live	Jun 2012	#10
this "problem" cannot be solved, whether it's the over-filled rod pools, nuke waste siting,	wordpix	Jul 2012	#13
Cooling system is complex	RobertEarl	Jul 2012	#11
not a closed system--the bottom of the cooling pool is damaged	librechik	Jul 2012	#17
Is not closed now, is right	RobertEarl	Jul 2012	#18
Fukushima operators fix cooling to spent fuel	muriel_volestrangler	Jul 2012	#14
"normal" is stuffing pools with decades' worth of spent fuel when they were designed as temporary	wordpix	Jul 2012	#15

Response to bananas (Original post)

Sat Jun 30, 2012, 06:33 PM

XemaSab (57,433 posts)

1. Link's missing

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Response to XemaSab (Reply #1)

Sat Jun 30, 2012, 06:37 PM

bananas (20,176 posts)

2. Thanks - forgot it! It should work now.

In case I messed up editing the OP, here's the link: http://www.marketwatch.com/story/fukushima-reactor-cooling-system-suspended-kyodo-2012-06-30

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Response to bananas (Reply #2)

Sat Jun 30, 2012, 06:47 PM

XemaSab (57,433 posts)

3. .

I know we're frienemies on here, but I really appreciate the updates.

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Response to XemaSab (Reply #3)

Mon Jul 2, 2012, 12:05 PM

bananas (20,176 posts)

16. Thanks for saying that. nt

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Response to bananas (Original post)

Sat Jun 30, 2012, 06:48 PM

waddirum (517 posts)

4. ummmmm

fuck

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Response to bananas (Original post)

Sat Jun 30, 2012, 06:55 PM

waddirum (517 posts)

5. other key sentences

"The water temperature of the pool was 31 C at the time of the suspension at around 6.25 a.m. local time and no leakage of water with radioactive materials has been found, Tepco said.

The temperature of the pool rose 0.26 C per hour by late Saturday afternoon, according to the utility."

You all can do the math, but that is 136 hours to reach 65 degrees C. Have a great weekend!

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Response to waddirum (Reply #5)

Sun Jul 1, 2012, 07:39 AM

solarman350 (136 posts)

12. Leakage of Radioactive Material-Laden Cooling Water

Last edited Mon Jul 2, 2012, 12:39 AM USA/ET - Edit history (3)

Is TEPCO spinning two different stories about the leakage of radioactive material-laden cooling water? Here's what I read and the site where I read it from:

"The water temperature of the pool was 31 C at the time of the suspension, and leakage of water with radioactive materials has not been confirmed, TEPCO said..."

Reference Link:
http://mainichi.jp/english/english/newsselect/news/20120630p2g00m0dm049000c.html

Building Housing Reactor #4

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Response to bananas (Original post)

Sat Jun 30, 2012, 07:00 PM

Journeyman (9,207 posts)

6. What could have possibly happened to cause that cooling system to automatically shut down?. . .

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Response to Journeyman (Reply #6)

Sat Jun 30, 2012, 07:22 PM

freshwest (31,583 posts)

7. Time to recycle the kid's club house in the back yard.

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Response to bananas (Original post)

Sat Jun 30, 2012, 08:09 PM

sulphurdunn (3,511 posts)

8. Why not nuclear?

Because it can melt down. Because you can't turn it off. Because you can't safely eliminate the waste. Because it can kill and kill and keep on killing.

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Response to sulphurdunn (Reply #8)

Sat Jun 30, 2012, 08:31 PM

snappyturtle (11,814 posts)

9. Amen nt

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Response to bananas (Original post)

Sat Jun 30, 2012, 08:38 PM

They_Live (814 posts)

10. I'll say it again.

Solving this problem should be the top priority for every nation on earth, whether Japan is asking for help or not. It will impact all of us.

Solving this one and avoiding another one.

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Response to They_Live (Reply #10)

Sun Jul 1, 2012, 09:23 AM

wordpix (12,479 posts)

13. this "problem" cannot be solved, whether it's the over-filled rod pools, nuke waste siting,

dependence on electric grids, sites of plants on coasts and earthquake faults, cost of building new, extending for 20 more years the lives of plants designed for 40 yrs., or human error.

Try to spin the "problem" whatever way you want, this industry needs to be SHUT DOWN.

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Response to bananas (Original post)

Sun Jul 1, 2012, 01:08 AM

RobertEarl (2,934 posts)

11. Cooling system is complex

Water circulating through the pool must be pumped up over 100 feet. When taken out of the pool it must go through a chiller that removes heat.

The circulating water is in a closed system. If it wasn't the radiated water would have no where to go but into the ocean. Since it is radiated water corrosion and other problems arise.

Probably a million gallons a day go through the system. An array of pipes, pumps and coolers are all involved and must all retain integrity under pressure.

And remember, there have been several earthquakes there recently. And the building itself is been taken down piece by piece. Lots of problems involved in the whole mess.

You tube links of the deconstruction:
http://www.youtube.comusernuckelchenblogde?feature=watch

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Response to RobertEarl (Reply #11)

Mon Jul 2, 2012, 03:02 PM

librechik (25,032 posts)

17. not a closed system--the bottom of the cooling pool is damaged

and for months they have been pouring water over it and it leaks out the bottom into the ocean.
Tepco is understandably reluctant to admit this, so hard to find a definitice "yes it's leaking" but that seems to be the suggested conclusion.

http://www.nytimes.com/2012/03/30/world/asia/inquiry-suggests-worse-damage-at-japan-nuclear-plant.html

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Response to librechik (Reply #17)

Mon Jul 2, 2012, 07:20 PM

RobertEarl (2,934 posts)

18. Is not closed now, is right

No telling how much is still running off into the Pacific.

Science has determined that sea sediments close to Fukushima are many times above 'allowed' levels.

What is really scary is the fact that the highly radiated water that was formerly in the 3 melted cores and spent fuel pools, all ended up in the ocean. No telling how many tons/gallons/acre feet of deadly water is now circulating around the world.

However, like they say: Dilution is the solution to pollution!

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Response to bananas (Original post)

Sun Jul 1, 2012, 10:47 AM

muriel_volestrangler (65,375 posts)

14. Fukushima operators fix cooling to spent fuel

The operator of the Fukushima nuclear plant has managed to restore the cooling system in a pool which holds hundreds of tonnes of spent nuclear fuel at the facility.
...
The temperature in the damaged pool touched 43 degrees before the fault was fixed.

TEPCO says it should now gradually fall back to normal.

Meanwhile, Japan is due to restart its first nuclear reactor since the crisis hit Fukushima last year.
...
http://www.abc.net.au/news/2012-07-01/fukushima-operators-repair-cooling-to-spent-fuel/4103506

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Response to muriel_volestrangler (Reply #14)

Sun Jul 1, 2012, 10:52 AM

wordpix (12,479 posts)

15. "normal" is stuffing pools with decades' worth of spent fuel when they were designed as temporary

holding pools until the rods could be removed to permanent nuke graveyards.

Yeah, "normal." How about solving the nuke waste issue, nuclear industry and the governments that subsidize it, before stating everything's back to "normal?"

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